The Impact of Charge‐Distribution on Photochromic Properties in 1D Coordination Polymers

Abstract

The reaction of CdCl 2 ·2.5H 2 O with 1,1Ј-bis(3-carboxybenzyl)-4,4Ј-bipyridinium dichloride (H 2 L1·Cl 2 ) or 4,4Ј-bis[(3carboxypyridino)methyl]-biphenyl dichloride (H 2 L2·Cl 2 ) in a dimethylformamide/methanol mixed-solvent system at room temperature, affording the complexes [(CdCl 2 ) 3 (L1) 3 ] n (1) and {[CdCl 2 (L2)(H 2 O) 2 ]· 2H 2 O} n (2). They were characterized by elemental analyses, IR spec-* Dr. J.-J. Liu

A photochromic zinc-based coordination polymer for a Li-ion battery anode with high capacity and stable cycling stability

“…H 2 bcbpy·2Cl was prepared using a literature method. 32 Fourier transform infrared spectra were recorded on a Nicolet iS50 spectrometer with KBr pellets in the range of 4000–400 cm −1 . Powder X-ray diffraction (PXRD) patterns were collected on a Rigaku Ultima IV diffractometer with Cu Kα ( λ = 1.5418 Å) radiation in the range of 5–50° at a rate of 10° min −1 .…”

Zinc tungstate encapsulated into a scarce Zn(ii)–viologen framework with photochromic, electrochromic and chemochromic properties

“…When the carboxyl group of the Bcbpy ligand is coordinated to the metal, it tends to form monometallic 0D complex cations, 41 1D (zigzag or helical) chains and 2D layers. 19,[42][43][44][45][46][47][48] Nowadays, no 3D metaloxoviologen cationic framework constructed from trinuclear metal-oxygen clusters with Bcbpy ligands has emerged. ZnW 12 @MV provides a new type of 3D POM@MV complex.…”

Dynamically Controlled Electronic Behavior of Stimuli‐Responsive Materials: Exploring Dimensionality and Connectivity

“…This subsection of the review will focus on 1D materials that contain noncoordinatively immobilized photochromic units (i.e., included as a guest through intermolecular interactions within the host). There are several examples that describe this type of connectivity; [59][60][61] however, there are only a few reports that focus on modulating electronic properties as a function of photoswitch isomerization. [62,63] An increase in conductivity upon irradiation (as mentioned before) was observed for an inorganic-organic hybrid (d = 1) containing viologen derivatives (Figure 3) as a photoresponsive moiety.…”

“…This subsection of the review will focus on 1D materials that contain noncoordinatively immobilized photochromic units (i.e., included as a guest through intermolecular interactions within the host). There are several examples that describe this type of connectivity; [ 59–61 ] however, there are only a few reports that focus on modulating electronic properties as a function of photoswitch isomerization. [ 62,63 ]…”